A team at the Advanced Quantum Testbed at Berkeley Lab demonstrated that an experimental error mitigation method known as randomized compiling (RC) can dramatically reduce error rates in quantum algorithms and lead to more accurate and stable quantum computations.

Researchers in Finland have developed a circuit that produces the high-quality microwave signals required to control quantum computers while operating at temperatures near absolute zero. This is a key step towards moving the control system closer to the quantum processor, which may make it possible to greatly increase the number of qubits in the processor.

As reported in Advanced Photonics, researchers from Nanyang Technological University, Singapore, and Tsinghua University, China, recently developed on-chip, low-threshold perovskite polariton parametric oscillator that operates at room temperature. With the intrinsically open (non-Hermitian) quality of polaritons, a spontaneous parametric down conversion process can occur at a wide range of angles, a feature that affords great flexibility for design.

Einstein's field equations describe how matter and energy shape spacetime and how in turn the structure of spacetime moves matter and energy. Solving this set of equations is difficult, but the research team has observed that the conservation of charge resembles entropy, which contradicts a basic physics principle where conservation arises from symmetry in a system. In general curved spacetime, a conserved quantity can be defined even without symmetry. This novel approach enables the researchers to observe black holes and other cosmic phenomena.

Researchers at the University of Missouri are working to help scientists speed up their data analysis of human genomes along the way to making new scientific discoveries. By speeding up the data analysis process, the resource could help reduce the associated cost in both time and money, thereby providing opportunities for scientists to conduct larger studies on the human genome with the ability to quickly process thousands of genomes at one time.